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You searched for: mediatype:texts AND collection:theides AND subject:"Compression"
[texts]Image Compression using WDR & ASWDR Techniques with different Wavelet Codecs
In this paper, two different Wavelet based Image Compression techniques are compared. The techniques involved in the comparison process are WDR and ASWDR. The above two techniques are implemented with different types of wavelet codecs. Wavelet difference reduction (WDR) has recently been proposed as a method for efficient embedded image coding. This method retains all of the important features like low complexity, region of interest, embeddedness, and progressive SNR...
Keywords: Wavelet Image Compression; WDR; ASWDR
Downloads: 282
[texts]A Novel Optimum Technique for JPEG 2000 Post Compression Rate Distortion Algorithm
The new technique we proposed in this paper based on Hidden Markov Model in the field of post compression rate distortion algorithms certainly meet the requirements of high quality still images. The existing technology has been extensively applied in modern image processing. Development of image compression algorithms is becoming increasingly important for obtaining a more informative image from several source images captured by different modes of imaging systems or multiple sensors...
Keywords: JPEG 2000; Hidden Markov Model; Rate distortion; Scalability; Image compression; post compression
Downloads: 94
[texts]Image Denoising Techniques Preserving Edges
The objective of this work is to propose an image denoising technique and compare it with image denoising using ridgelets. The proposed method uses slantlet transform instead of wavelets in ridgelet transform. Experimental result shows that the proposed method is more effective than ridgelets in noise removal. The proposed method is effective in compressing images while preserving edges.
Keywords: ridgelet; slantlet transform; image denoising; compression; huffman; edge
Downloads: 390
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